CHEN Nan, YANG Wu-nian, LI Juan. Distribution Characteristics of Landuse Patterns at Different Terrain Gradients in Hills and Mountains of Bazhong City[J]. Bulletin of Soiland Water Conservation, 2012, 31(1): 185-188.
CHEN Nan, YANG Wu-nian, LI Juan. Distribution Characteristics of Landuse Patterns at Different Terrain Gradients in Hills and Mountains of Bazhong City[J]. Bulletin of Soiland Water Conservation, 2012, 31(1): 185-188.DOI:
By taking 2007TM images and 1∶250 000contour maps of Bazhong City as data sources and using GIS spatial analysis functions
landuse database of Bazhong City is established and the DEM
slope
and terrain niche index chart are produced.Then
slope gradient
elevation gradient
and terrain gradient are respectively overlaid with landuse landscape data.The distribution characteristics of different landuse landscapes at different terrain gradients are discussed by introducing the dimensionless distribution index.Results showed that the forest land mainly distributes in the place with higher elevation
steeper slope
and greater terrain niche.Farmland and rural residential land are located in the place with low altitude
gentle slope
and low terrain niche due to the effects of climatic conditions and water distribution.Unused land is in the vast and distribution trends of the landuse landscapes.